Linked Life Data

2167178

Source:http://linkedlifedata.com/resource/pubmed/id/2167178

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1990-9-27
pubmed:abstractText
The cyclic AMP receptor protein-cAMP complex (CRP-cAMP) binds at a variety of distances upstream of several E. coli promoters and activates transcription. We have constructed a model system in which a consensus CRP binding site is placed at different distances upstream of the melR promoter. CRP-cAMP activates transcription from melR when bound at a number of positions, all of which lie on the same face of the DNA helix. The two distances at which transcription is strongly activated correspond exactly to those at which CRP-cAMP binds upstream of the well-studied galP1 and lac promoters. Footprinting of the synthetic promoters reveals that RNA polymerase makes identical contacts with their -10 regions even though CRP-cAMP binds at a different distance in each case. Kinetic analysis in vitro indicates that CRP-cAMP activates transcription from these promoters in similar but distinct ways. A model is proposed to explain this two-position activation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0092-8674
pubmed:author
pubmed:issnType
Print
pubmed:day
24
pubmed:volume
62
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
733-43
pubmed:dateRevised
2009-9-29
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Stringent spacing requirements for transcription activation by CRP.
pubmed:affiliation
Unité de Physicochimie des Macromolécules Biologiques, URA 1149 du CNRS, Institut Pasteur, Paris, France.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't